Carbureter.



CARBURETER.

APPUCATIQN vman MAY 6. 1912.

Patented Get. 12, 1915. j? if A54' 5:63 SHEETS-SHEET l.

.lllnmlllmm .WWI

4 4 E i f 1 u n. F. z d Y f F-.L. KINGSTON.

CARBURETEH, `MPLICTION FILED MAY 6. 1912. V

1,156,149. 1 'Pat'nted 061i.' 12, 1915.

3 SHEETS-SHEET 2- F. '1. KINGSTON.

CARBURETE-R.

APPLICATION FILED MAY 6.11912.v

3 SHEETS-SHEET 3.

Iso

orrion.

cannnnn'rnn.

risente.

Speccatioiiiof Letters Patent.

, Patented oct-.412, ieie.`

Application filed Mey 6, 1912. Serial No. $5,425.

This invention relates to carbureters and ias for its main object the simplification 'ot the construction and the cheapening of the cost ot manufacture of these devices.. ,s

More particularly the objects of the invention may be stated as: the provision of a device of tliis'nature wherein the parts are manufactured so-ar as possible otmetal which is stamped or drawn into shape instead of being cast; thus avoiding the necessity of tedious and expensive lathe work; the provision of `a device of this character of great lightness, absolute proof against.

leakage`and reliable and efficient operation; the provision of a nen7 and improved inlet or float valve; the provision of new and improved expedientsfor rendering the size of the air inlets proportional to the difference in pressure within and without the carbureting chamber; the provision of new and improved expedients for governing the admission of air; while further objects and advantages of my invention will become apparent in the course of the following description and claims. 4

Generally speaking, my invention may be deinedfas consisting of the, combinations of parts defined in the claimsyliereto annexed -and illustrated in the drawings accompanying-and forming a part hereof, wherein- Figure-1 is a vertical. central, cross-sectional view through a carbureter constructed in accordance with my invention; Fig. 2'is a horizontal cross-,sectional view taken upon the line 2 2 of Fig.v1y and looking downwardly; Fig. 3 isa horizontal cross-sectional view taken upon the broken line 3 3 of Fig. 1 and looking upwardly; Fig. 4- is adetail .cross-sectional view' through a slightly different 'form of carbureter, taken on aline corresponding to the-line of Fig. 3 and looking in the direction of the arrows; Fig. 5 is a perspective view of a portion of the float showing the pivoting and valve operattion of the throttle casing, illustrating the i i valve operating and adjusting means and the clamp by which'the casing is secured to the.

- carburetor body; Fig. 9 is a perspective view of one 'member of the throttle valve operating means; Fig. v10 is a perspective view of the strangling tube;Fig. 11 illustrates thev development of a portion of the air-inlet mechanism shown in Fig. 1; Fig. 12 lis a plan view of a modified air-inlet mechanism capable of substitution for that illustrated in Fig.V l; Fig. 13 represents the development of still a third air admission expedient capable ,of use inl the relation shown in Fig. 1; Fig. 14 is a vertical cross-sectional view through the center of a carbureter of slightly different construction, illustrating the application'of the air admissionexpedient shown in Fig. l13; Fig. 15 is a bo ttom plan view of the carburetor shown in Fig. 14, a portion of the damper-plates being broken away; Fig. 16 is a detail," cross-sectional view on the line' 16-16 of Fig. 15; and Fig. 17 is a' perspective view 'of the choking plate or diaphfjagm. 1, o

n general my. improved carbureter may' be said to consist vof an annular fuel reser` voir, made in anew manner after anew and improved design, and including new and irnproved means for maintaining a. constant liquid level therein; aA tubular chimney-detining a carbureting chamber secured within ing means; F ig..6 is a perspective view of ythis reservoir and'p'rovided with new and f improved expediente for the-regulated adimission of air and fuel thereto; a' throttle l,valve casing; and new and'ir'nproved means'` 4for `securing together all of said parts.

Describing the partsby reference characters, 1 represents the inner cylindrical wall of the fuel receptacle and 2 the outer cylindrical wall thereof. This receptacle'is preferably formed fro-mpsheet brass by drawing the same tiret in one direction andtlien in the4 otherglthe lower portion of the wall .1' merging with a Idownwardly Haring-portion 3 which in turn merges' with the upwardly flaring portion 4, the latter portion being connected at its upper" edge with vthe wall 2. a

35 an annular buoyant lbody 20 of corkor other VThe height of the wall 1 is preferably greater than that of the wall 2 as illustrated in Fig.

1. The wall 2 is preferably swelled or bulged outwardly at one point in its periphery so.

as to produce thehollow protuberance 5,

lsaid protuberance having an integral substantially horizontal bottom 6 which is punched with a circular aperture'for the re ception of the fluid supply connection. This connection may conveniently consist of a threaded member 7 adapted to traverse this aperture and having a peripheral fiange' 8 at its upper end, and also provided with a lock nut 9 whereby it is secured in place.l This member is 'formed with'a longitudinal bore 10' having its upper end flared or other wise' formed las a valve seat, and having its lower end formed for the reception ofa nipple '12. adapted to be secured to the member by'a gland 13. Secured in the protuberance 5 isa U-shaped 'bracket illustrated in perspective in F ig.6,.

' between the youtside of the arms 16 is preferably the same as the interior width of the protuberance as illustratedein Fig. 2.

Surrounding .the wall 1 of the reservoir is suitable material, said body having secured to its upper surface at one side the laterally projecting arm illustrated with particular-4 ity in Fig.' 5. This arm comprises a flat metallic plate 21 having downturned lateral ears 22 for the reception ofa pivot wire 23 theends of which rest in the notches 17-17.

, 26. The middle portionA of the plate 21 bei tween the ears and in the rear' of the Beyond these ears this plate is extended to form a nose 24 bifurcated by means of a slot 25, which slot ends in a slight enlargement nose 24 is embossed upwardly as shown at 27 for the reception of the shank 28 ,of a second plate, the forward end whereof .is seen at 29, and this forward end is likewise formed with a slot registering with the slot 25 anda recess registering with the recess The. rear ends of these'plates are se- `-cured together by suitable means such as rivets 30 and the whole armis secured to the body 1 by means of the clenched ends 31 of a suitable staple. The projecting end of this arm forms a point of attachment for the movable member of a valve, said movable member comprising a stem 33 having at one end a conical head 34 adapted to enter the upper end of the bore 10 and having adjacent to'but spaced from the upper end an but the diameter of the enlargement 35 is.

slightly greater than the 'distance between the nose 2 4 and the free end of the plate 29. This construction permits the enlargement 35 to be seated in the enlargement or recess v26 by the springing apart of the plates and be securely retained therein when assembled. lTheparts can be so designed as to afford the stem the freedom of movement necessary to its proper operation.

The .pivot wire 23 is held in the notches 17-17 by means-of a U-shaped retaining,

clip 38 illustrated in Fig.

.flange 42 adapted to overlap 'the upper edge of 'the wall 2 and of the protuberan'ce 5. The middle portion of this cover is embossed upwardly as shown at 43 for a purpose which will be described later, and the inner `surface of the cover is arranged to engage the same securely the clip 38 so as to hold in place.

7, the sides 39.-39 lof which are spaced apart the same distance Secured withinvthefinner wall of this receptacle is a chimney member which forms the carbureting chamber. The body of this chimney is formed of a tube 45 fitting closely within the wall 1 and extending from a point slightly above the top of said wall to a point intermediate between the topand bottom of the flaring portion 3 where it is TheV flared abruptly outwardly as at 46. portion 46 merges with an inclined portion 47 the angle whereof is substantially the same that of the portion 3, and the portion 47 in turn merges with the cylindricalv portion 48.r Below the portion 48 the wall of this member is formed with a pair of annular stepped shoulders separated by a wall portion 49, and against the upper of these shoulders is clamped the air-inlet device whichl shall now explain.

In the embodiment illustrated in Figs.' 1 to 12, inclusive, this device consists of a pair of parallel annular metal Vplates secured tol vgether at theirperipheries and formed with registering circular apertures. .spaced about the central aperture, these apertures being provided vwith upwardly opening valve members whose weights bear different ratios ros to the sizes of the apertures which they close. In the' embodiment illustrated in Figs. 1 tol 11 the apertures in the upper plate are of uniform size a'nd the apertures of the lower plate are' of varyingsizesbut al1 smaller 'than those .of the upper plate. The lower plate is indicated at50 and the upper plate atfl, connection between the two being conveniently effected by bending the outer edge of the plate 5l toward that of the plate 50 and Wrapping it about theI same.'` The com blned edge ot these 'two plates is made strictly circular and formed to tit the smaller of the shoulders above mentioned.v I

At one point the Wall t9 is out away to form anarcu'ate slot 53, and through this slot projects a radial head el here shown as integral with the plate 50. This head is made substantially circular as shown in Fig. 3 and is received between the arms 55 of a lUishaped block which is in turn threaded upon an adjusting screw This screw is supported in a rectangular frame 5'? secured to the exterior of `the carbureter at about the level of the plates 50, 5l, in such manner .that its rotation will adjust the plates angularly with respect to the mixing chamber. rlhe portion i6 of this member is formed with a plurality ot inclined embossed projections 58 conforming innuinber andar rangement to the apertures above mentioned, 0and for each pair of apertures is a ball 59 intermediate in size between the apertures in the plate 5G and those in the plate 5l. ln the embodiment illustrated in Figs. l and ll the balls are all of the same size but the tact-that they are seated upon apertures of varying size will cause them to be lifted successively upon increase in the pressure` of the air, while the rotation oi? the plates with respect to the fixed inner member of the carburetor will bring these balls beneath the bosses 58 so as to-- .liniit the amount of opening movement thereof.

'f In Fig. l2 l have illustrated a second expedient for accomplishing thesame general purpose. ln :this view l have illustrateda plate 50a similar in all respects to the plate V 50 excepting that the surrounding apertures therein are all of the same size. `Secured above this plate is a second plate 5la similar formed with a` central boss 52a for the recep.

tion of the strangling tube.y and with a radial handle 54ans before. ln-e'achot the above cases the extent of opening ot these valves is controlled by rotating the plates which carry the same to different positions beneath the inclines 58.

ln Figs. 13 to lil have illustrated athird v Va ry'ing height.

inlet openings proportional to thev pressure ln this View l have illustrated the development of a part ota plate 5G", said plate being similar in all respects to the plateV 50 T9 above mentioned, except that instead of being formed with downwardly opening apertures it is formed with a plurality of downvWardly depressed or embossed portions 110.

each of which takes the form of a shallow inclined ball-receiving groove having at its lowest end a spherical scat lll in which the ball can snuglydit. IThese spherical seats are. formed with apertures 112, said apertures being of the same size but having aires inclined at varying angles to the plate so that'thc balls will rest more squarely on some apertures than on other apertures rl`he,balls 59b being of uniform size, 1t isI obvious'that the pressures required to roll 85 them away from their apertures will vary with the directness of application of such pressure'with the result that the same will be unseated successively as inthe preceding modification. ln this embodiment the plate in the preceding case.

rEhe fact that in the device shown in Figs. lto ll the balls are seated in apertures ot varying sizes Vcauses them to 'project to correspondingly varying heights above-the plate 50, wherefore theI bosses 58 are similarly 100 stepped so'that the various balls may be clamped to their seats simultaneously and limited to the samev amount of movement. With this construction the balls will rise successively whatever be the limitations-of such rising movement. ln 'the device shown in Fig. l2 the varying sizes of the balls cause them to project to unequal heights and necessitate the employment of bosses of in Figs. 13 to 1G, however, lthe balls project to the same distanceabove the plate and bosses oi equal height .are used. These plates may conveniently'be secured in place vby applying to the shoulder next beneath them a bottom plate GO having a peripheral l flange 6l, and crimping inifzardly over this .flange the edge (i2 of the inner member. In

the embodimentlshown in Fig. l this'bottoln .plate isshown as having'a downwardly con- 120 vex body, although this is a matter of design merely, and the middle of" this plate is formed with a depending annular flange 63 defining an aperture through which air be drawn into thelmixin'g chamber. plate is formed with a hollow upwardly projecting boss 52 surrounding the central aperture thereof 'and extendingthrough the central aperture in the plate 5l, and secured in this boss is what l term the strangling In the modification'shown-'110 The tube. u bidh consistsco a' frusto-conical sheet` metal tube A65 having at its larger end ax cylindrical portion 66 corresponding@ in height to the boss 52 and having 'an annular rib 67 at each end of the said cylindrical portion; One side of this tube is" preferably 'severed from. end ,to end by a slot or scarf l 'merges '1-5 vThe inner cylindrical wall lof the'vres'erare formed with registering inclined diaper- 4tures 472 ata point opposite to the protuberance 5, and the flaring portion 4 of the reservoir bottom is formed with an apei'-,

ture 73 in alinement therewith. Mounted in these apertures is a tubular nozzle 74 hav.; ing its inner end received in the recess 69 of the stranglingtube and having its intermediate portion secured inthe aforesaid apertures by any convenient means such as will assure a tight joint suoli as brazing or welding. This nozzle is formed with a constricted portion 75 at a point removed from its inner end so as to define a priming chamber similar to that disclosed in my former patent dated Oct. 25, 1910, No. 974,076, and with internal screw threads at the end oppow site said priming cup receiving a needle valve 76 whereby thev passage through said constricted portion may be regulated. The outer end of the nozzle tube may be provided with a' packing gland-'77 to prevent leakage about the va'l've and'to exert .sufficient-friction thereon to prevent accidental movement. The inner end of the needle valve is reduced as at 78 so as to define an annular chamber which communicates with the interior of the reservoir` by means of apertures shown 4in dotted lines in Fig. 1. 20 is preferably formed withya notch immediately above the tube so as to permit its falling, 'and the 'edge of the priming cup is located substantially `at but not lower than the normal level of 'liquid in the reservoir. v

The chimney member of the carbureter 1s secured to the fuel receptacle by flaring outwardly the upper ends of tlie wall 1 and tube 45as shown at 8O so'as to interlock these portions firmly together at this point and draw theinclined portion 47 of the chimney closely into contact with the flaring portion 3 of the receptacle bottom. The fiared portion 80 also forms a seat for the inclined head 81 of the throttle valve casing 82 which head is formed with an annular,l

shoulder 83 at the rear side thereof. At-

tachment ofthe casing 82 jto the'carbureter body is effected byI means of a split lclamp-f voir and the cylindrical tube 45 of the core .v

The buoyant body y upon' the raised portion 43 of the cover and f lock the same rml in position. The oen ter of the coveris ormed with an aperture 86 of sufficient size to permit the passage of the flaring ortion 80, but this aperture is sufficiently c osed by the lower face of thel clamping member leaving only the necessary venting space. l

` lournaled inside the vcasing 82 transversely of its axis is a. rock shaft r90 carrying abutterfly valve 91, and secured to the pro'- jeoting end of this shaft is a sleeve 92 having at its inn'erv end a lateral flange 93. The y inner face of this flange is preferably made substantially flat so as to rest against a suitable bossformed on the casing and the outer sidethereof is firmed with radi-al serrations 94. Pivoted loosely upon this sleeve is the cylindrical collar 95 of an operating lever 96, one Sideof which is formed with serrations matching the serrati'ons 94. A. cap 97 is threaded to the end of the shaft '90 and'y Y locks this lever yin adjusting position. The

periphery of the flange 93 isv formed with spaced radial projections 98 and 99,v one of l which. as 98, is bent over at its end so as to' engage the side of a boss 100 carried by the casing, and the other, as 99, is leftstraight so as to engage the end of a setvscrew 101 carried hysaid boss. The object of bending over the projection 98 is' to permit it to pass by the head of this set screw as will be apparent by reference to Fig. 8. The arrangement of the projection 98 is such that the throttle valve will be `Wide open when this projection engages the bossv 100, while the position of the'projection 99 is such as to J permit the closing of the valve to avpoint L .l

which shall just permit the engine to run at its very slowest speed, adjustment of this point for different` engines being effected by means of the set screw 101.

For the purposeof holdingthe valve 91 ilnpositively in position so 'as to lprevent the adjustment of the same from being'dist-urbedfv bv the vibration of the engine, I 'preferably provide the casing '82\ with a recess 105'rcceiving a' spring pressed ball adapted to yieldingly engage suitable notches 106 formed in the edge of the flange 93.

In Figs. 14 to 16 I have illustrated many l of my improvements in connection with a carbureter of somewhat different' construe-- tion. In these "iews I have illustrated 'a castI metal receptacle. comprising an inner a n. nular wall l, outer Wall 2a, bottom Band protuberance 5, the bottom of the protuberance being apertured as before for the reception 02E-,a fiuid supply connection like that 49 1 a laterally openingarcuate which projects the arm 54gb which arm is `received between the arms .55 of a U-shaped. that previously described` .heretofore described. float, flo'atfva'lve,

' and tioat#valve-supporting-means are lthe device.

sameas thosefalready described, and are likeL wise secured-1n .'placevby. means of a cover" l111 having 'a downturned peripheral lip 42 and an upwardlybulged portion 43. The

upper jend of?tliewall1*i vis illustrated as soeketed' and 'threadedas at..1'20 for the reception' of a*ca-sing'82fyvliich'may or may not be similar to Athatjbefore described, and the exterior of said-:socket Aportion is outwardly aredas at v85a for the-reception of the similarly beveled lip of a split clampingring 84, the lower face of. vwhich presses downwardly on the coveras in the preceding i The bottom of the I' V'with' an .annulaigdepending integral iange plane of Vthe plateObis i llustrat-;d as raised above the surface of its peripheral lip from the fact that the balls 59b project above the.

same a smaller amount than. 'in the other constructions, and the Aflange' 52b is. here shown as downw'ardly'- turned 'because of l' -the greater'height of the plate.

'block similar to Thev inclinedA bosses 58a by means of which the openingmovement lor" the balls .is limited are here shown ascast directly upon the bottoni 3 of the receptacle, and are made of substantially equal height, inasmuch as the balls 59h project in all cases substantially equal distances above theirdfplate'.

. The. wall 485* is formed at one point with i slot 53a through and similarly operated. The plate b is secured. in plaoe'by means cfa-bottom plate 6G similar to that previouslvdescribed ex-y peripheral llange 61 by means of a ring The fuel cepting in having `its secured to the wall 18a 6221 attached in place by screws.

' nozzle in this case is'illustrated at 74a and is cast integral With the receptacle, but 1s ctherwiseeXact-ly like that above described andthe passage therethrough is regulated by a needle manner. i limiting the amount of air entering the cart bureting chamber-irrespective as to whether" valve' 76 in exactly the same I may also provide means for 'it shall enter through the Astrangliri'g' tube or through the valves surroundingthis tube:

ln the device shown in Figthe opening through the flange 63 isttally unimpeded rnl thetotal amount otairf'e tering'the car-` l C i In device will' besubstantially clear from the bureting chamber eanbe limited only as far as the capacity of the stranghngtube; .that

receptacle is formed the flange 63. The plate.128lis apertured at of 'the controlling 'formed with suitable slots 'or notches 134 is, although .the auxiliary valvesvmay be clamped shut `by rotatingthe plate 50, the stranghng tube will always be open.

In some cases, such as on starting the enlgine in cold weather or when the atmosphere 1s damp, it is desirable to choke the air inletl to an unusual degree so as to increase the vacuum 'in the carbureting chamber and,

temporarily increase the 'fuel'ow For 'producing this result l preferably form the plate with segmental damper openings, controllable by means of a rotatable damperplate, and obstruct the passage through the lange by means of an /apertured choking plate, this `eholting "plate being easilyfre-v movable so as te permit the ready 'changing of, the strangling tube. The apertures in the plat'e 60 are shown at 125 and the r-O- tatable damper plate at 126, ysaid :plate having apertures similar to the apertures 125.` rlfhedamper 126 1s centrally apertured for the reception of the flange 63 andis se# cured'inplace against the outer surface' 'of theplate 60 lby means of theresilientn- ,eej l gers' 127 formed about the periphery of the hat plate or diaphragm 128,' said fingers over an annular enbeing curved to snap largement 129 forxnedat the lower .end-of 130 for permitting the accessto the carbureter o f a minimum quantity of air, the` size of this aperture' being preferably suited to thepeculiarity of the particularenginm and the plate 128 vis also. formed with an 'arm 131 wherebyl it may be rotated. In the embodiment shown herein this Yarx'n is illustrated as forming a continuation of one of th'engers 127, although this expedient a isl obviously a matter of design only, and

"through the damper plate and engage the walls of one of the apertures 125 whereby the movement of the damper may be limited- 'lio f to the'amo'unt necessary. to open and close" these apertures. The arm 131 is' prefer,-v

ably formed with two tongues 133 as shown' in Figs. 15 and-17, so that one of the tongues can be bent inwardly to limit the turning movement of vthe damper, while the 4,

1204 such manner as to' other tongue is left straight, thus enabling the stop to be fixed in permit the damper .to be rotated in' either- Vdirection from its closed position as. may bel necessitated bv the particularfarrangement levers.- lThe damper 1s for the reception of the tongue It isbelieved'that the 'operation of the preceding description -of its construction,

excepting for a few details of adjustment'` y and operation which. will now be pointed out. The nipple 12 being connected to a gasolene supply pipe and the outlet end of the casing 82 to the inlet pipev of an engine,

thel reservoir will become filled with fluid' to a height substantially at or slightly below the level of the lower edge of the inner end of the nozzle 74'when further inflow of fluid will be'prevented by the fioat valve. The passage through the constricted portion 75 of this tube is always open by an amount depending Vupon the adjustment ofl the needle valve, so that the priming cup will immediately become filled with jlluid, and the air passage through the strangling tube 65 is always open. If now the engine be started in the usual manner, the fuel in the priming cup will be rapidly vaporized by the air rushing through the constructed strangling tube across the mouth of the nozzle tube which thus acts in a manner similar to an' atomizer. The sizeof this strangling tube will var-y' for different engines, or for suflicient-to admit the very smallest v the saine engine when operating under differing conditions. The elongated slit 68 in the side of the strangling tube not only facilitates .its insertion and. removal, but perrits the admission fof a current of air .immediately beneath the nozzle tube so as to vaporize any fluid which 'might run downwardly along theI side thereof.

,If the engine be cooled or the atmosphere damp so as to require a larger. proportion of fuel, the damper 126 is rotated so as to close the air inletto a greater or. less degree, thus increasing the difference in pressure on th'e exterior of the carbureting chamber and causing an added quantity of' fuel to bel drawn through thenozzle without changing the adjustment of the needle valve The aperture 130 limits the closing movement of the air passage and is generally chosen as quantity of air which will cause the operation of the engine. Obviously as long as the amount of air admitted through the plate 60 is less` than the capacityof the strangling tube, the

l balls `59 will remain seated. but as soon as the amount of air admitted past this plate becomes greater than such capacity, the eX- cess will enter through'the apertures `in the 'plate 50, (503, 50") the balls 59 (flafb.)

being unseated successively so that the total area of the air inlet will always be approximately proportional to the amount of air demanded.

While I have necessarily described my invention in detail and particularly. pointed out-the exact features'of construction which my experience has indicated as resulting in.`

a particularly efficient, economical, 'and invexpensive device it is obvious that some of ,my'improvements 4may beoniitted or that and many of the advantages contemplatestill realized. It is also apparent that many changes in details and'in construction and@V I claim is: 1. In'a carbureter, the combination with 'an annular reservoir having acylindrical inner wall, of a chimney member defining a carbureting chamber, said member havinga cylindrical tubular extension traversing said inner wal1,. the upper end of said extension being deflected outwardly so as to interlock with.'the upper end of the said inner wall. 2. In -a carbureter, lthe combination with an annular. receptacle having a cylindrical inner wall, and an outwardlyv and downthe claims lannexed wardly f laring portion at the lower end of said wall, of a chimney member having a cylindrical tubular -said inner wall, and andownwardly and outwardly flaring portion adapted to engage the similar portion of said receptacle, the upper end of said extension being deflected outwardly so as to interlock with the upper 6nd of the said inner wall and draw together said flaring portions.

3. In a carbureter, the combination with an annular receptacle the inner wall whereof projects above the outer wall and has its upper end outwardly flared, of a chimney `member secured .within said inner wall and defining a c arbureting chamber, the upper end of said member being flared into engagement with said first flared portion, a tubular 'casing having an inclined head projecting into the flaring 'upper end of said chimney `and having an abrupt shoulder.

and a clamping ring embracing the abrupt portion of said head and the flaring portion yof said wall. A

4. In a. carburete'r, the combination with anannular receptacle the inner wall whereof projects above the outerwall and has its upper end outwardly dared, and an air reg- ;ulating member secured within said inner wall. cfa tubular casing having an inclined head projecting into"the flaring upper end extension traversing roo .of said walland having an abruptshoulder, i

a cover for said receptacle and having an aperture receiving said inner wall, and a clamping ring embracing'said head and the Hared portion. of said inner wall and en-' gagmg the top of`said cover.

5. In a carbureter, the combination, with en .annular receptacle, the inner wall whereof projects abovethe outer wall and has its upper endoutwardly flared, of a tubular casing secured in alineinent with said inner wall, a cover -for said receptacle and havin ormed with" an aperture^ rgceiving said an.` u wardlw convex to said cover bein i `other features could be substituted therefor f l p p g .lill

inner wall, and a split. clamping-ring having an inclined portionengaging the inclined portion of said wall and flat portion engaging the top of said oever, whereby said. cover'is secured 1n place and the cover aper- 4 ture is closed. I

6. In a-carbureter, the combination, with an annular receptacle, one' oiivhose walls projects above Vthe other Walland has'its upper end liared toward said other Wall, vof

a tubular casing secured in alinement with 'said inner wall, a cover vfor said receptacle,

' said lcove!" being formed with an aperture .receiving said inner Wall, and a clamping nieinbei'. having an inclined portion engaglng the inclined vportion-oi' said wall and a dat portion engaging thev top of Saidcover,

whereby said cover is secured in place.

" ceptacle,

` War/9 through each end and a constricted portion intermediate of its ends,and a valve mernber adjustab'ly secured in tbe bore at the' outer end of said nozzle tube 'for.governingV the passage therethrough, the bore: at the inner fili end of' said tube forming a fuel cup.

v '8. 'in a' carburetei, thecombination, with an annular receptacle and means for main- A taining a Xed level of liuid fuel in said receptacle. 4tbe Yinner wall of -said receptacle delining an air inlet passageway, of a frustoconical, open-ended tube supported in said passageway with its smaller end uppermost, and a nozzle tube communicating with said receptacle and intersecting said tubenear its il. ln a carburetor, the combination, with 'an annular receptacle and means for maintaining a fixed level of fluid uel in said receptacle, said inner wall defining anA an' inlet passage, of a truste-conical opeinended tube supported in said passageway with its' smaller end uppermost, and an inclined noz# zle tube communicating with saidreceptacle I taining a fined level of fluid fuel in said receptacle, said inner wall delining an air inlet passageway, of a 'truste-conical', openended tube supported in said passageway with its smaller end uppermost, and an in` olined nozzle' tube intersecting said frusto conical tube near its upper end and corninunica'tinl;1 with'said receptacle, said nozzle tube having a constricted portion between said receptacle and its discharge end, said constrictedvpotion beingvspaced from said.v discharge end :whereby a piiming'icup is formed, the lowermost edge of said prirquing;=,`y

cup being not lower than the liquidvlevell and disposed substantially .in the 'vertical axis of said receptacle.

ll, lnia carbureter,thecombination, with an annular receptacle and means ormaintaininga fixed leveljof Huid yiiuel in said 1re'- i5 ceptacle, the inner Wall ofl said ieceptgcle defining an air inlet paagewayf a trusteconical, open-ended-tube supported in said passageway with i y l and a iuelv nozzlefintensecting said frusta-r zsnialleiend uppermost,

conical tube at anfangle near itsl upperend and communicating 1u-'ith 'said receptacle, the

lowerniost edge of the' nozzleoriiice being not lower: 'than the 'liquid level. l

12; InV a carburetor, the combination, with an annular receptacle and ymesme-forfmainfftaining' 'a uned `level of duid fuel in'said reV ceptacl'e, the innerlwallof. said-receptacle de lining an ali' passaga'of a plate-supported transversely of the lower endof said passage and having a central aperture, an upright tube supported in.v aperture, aninclined nozzle tube intersecting saidfiirst tube vnear its upper end and communicating with ,the

Ainterior o'ii .said receptacle,` and 'ein inletie,

valvesv carried by said plate atthe sides of said' tube and adapted to be opened vby the Pressure-ot aii'thereon.

13.111 a carbureter, the combination, a carbureting chamber, of anuprigbtopen tube supported in saiclvchamber, a lnozzle communicating with .ai source :ot A'luid luel supply and intersecting the upper end ,ofsaid tube, and means arranged to admit a ,quantity of air substantially proportional'to the difference inpressure 'existing within'and without said chamber, the discharge end' of said nozzle being enlarged to -on ifa, fuel cup andl having its rimdisposedobliquely" to the axisof said tube. le. ln a carburetor, thecombination, with an. annulail receptacle and lineens for mainf-y tainin'g a fined level oi Huid fuel in said re-g ceptacle, the 'inner wall off said receptacle), 'defining 'an air passage-of 'aA nozzle tube' una ice

tially to the center of said passage, means for' concentrating upon said nozzle thev air iniA projecting from said receptacle substain a carbureting chamber,

said chamber being in communication with val1-inlet connection, of an annular plate.

traversing said 'chamber at a point uponthe opposite side of said nozzle fromsald 1nlet `connection and formed with air admission air-proportional to'the'differe'nce in pressure within and without said chamber, and means operative upon all of said valve members simultaneously for adjustably limiting the amount of opening of the same. f

16. In a carbureter, the combination, with a carbureting chamber, of a plate closing the lower end of said clamber. and having a central aperture and a plurality of air inlet apertures surrounding said ycentraly aperture, an upright open tube supported 1n said central aperture and projecting upwardly into saidl chamber, and a pluralityof valve members for said air admission apertures, said valve membersbeing arranged to open sucn cessively upon an increasing difference of pressure withinand without'said chamber. 1-7. In a carbureter, the combination, with an open cylindrical carbureting chamber, of an apertured plate closingthe lower end of said chamber, certain of said apertures being provided with valve members and other of said apertures being open, said valve members being' arranged to open successively upon increase A in the difference of pressure-within and without said chamber, and guide members for limitingthe lateral displacement of said valve members fromv their apertures.

18. 'In a carbureter, the combination, with of a plate closing the lower end of said chamber and having a central aperture and smaller apertures lsurrounding said central aperture, anupright tube secured in said central aperture and projecting upwardly. into said chamber, a

second plate surrounding said tube and spaced above said first plate and having apertures registering with the surrounding apertures in said first plate, and valve mem bers received in the apertures in said second plate, andresting upon the edges of the apertures in said first plate so as to closethe A passage therethrough.

19. In a carbureter, the combination, with a carbureting chamber, ofl a plate closing the lower end .of said. chamber and havinga central aperture and smaller apertures' surrounding said central aperture, an upright tube secured in said central aperture and projecting upwardly int'o said chamber', a second plate surroundingY said tube and spaced above said first plate and having apertures registering with the smaller apertures in Isaid first plate, and valve members received 1 in the apertures in said second plate and resting upon the edges of the Vapertures in ,rounding Said central aperture,r open tube supported'in said central aper- 'said first plate so as to close the passage 65 therethrough, the proportion between the A weight of saidvalve members and the size of the surrounding apertures in said first- `plate varying progressively whereby said i valve members will be raised successively from the seats uponan increase in the pressure difference within and without said chamber.

20. 'In a carbureter, the combination, with a carbureting chamber,"ofja plate closing the lower end of said chamber and havin a cent'ral aperture and aplurality o f air,l inlet apertures surrounding said central aperture, an upright open tube supported in saidcentral aperture and projecting upwardly into said chamber, and a plurality of valve members 'for said surrounding apertures, the proportion between the weights 'of said*` valve members and the size of their apertures varying pro yressively, whereby saidA 85 valve members wi be opened successively upon an increasing difference of pressure within and without said chamber.

21. In a carbureter, the combination, with v a carbureting zle therein, of an aperture'd plate closing the lower end of said chamber below `'said nozzle, certain of said apertures being provided with valve members and other of said apertures being open, the ratio of the effective area of said valvecl apertures to the weights. of their respective valve members varying'` progressively whereby said valve' members will be opened successively upon increase in the difference of pressure within and With- 100 out said chamber.

22. In a carbureter, the, combination, with a earbureting chamber, of a plate closing the lower end of said chamberand having a central aperture and smaller apertures sur- 106 rounding said central aperture, valve members arranged to seat upon said smaller aper- 'tures and to be opened successively upon an ,increase in the pressure difference Without and within said chamber, a regulating member 110 above said plate and having portions adapt- 1 ed to engage said valve membersl whereby the opening movement thereof may be limited, and means for rotating said plate S0 as to bring said valve membersv below dif- 115 ferent portions of said regulating member' lto adjust the amount of such opening movement. y 23. In a carbureter, the combination, with a`.carbureti ng chamber, of a plate closing V the lower end of said chamber'ad having 'a central aperture and smaller apertures suran upright ture, a fluid fuel nozzle opening into said y tube, valve members arranged to ,seat u on sald smagler apertures, thep ratio of the e ective area of said apertures t the weight of chamber and a fluid fuel noz- 90 their respective valve members varying progressively, whereby said valve members will be lifted successively upon an increase in the preure diiference without and within said chamber, a regulating member above said plate and having inclined portions adapted vvvto engage said valve members whereby the justfthe amount of such opening movement.'

24;'111 a carbureter, the combination, with a carbureting'chamber, of a plate closing the lower end of said chamber and having a -central aperture and a plurality of apertures of varying sizes surrounding said central aperture, an upright tube secured in l'said central aperture and projecting freelyv upward into said chamber, a nozzle communicating with a source of fluid fuel supply and opening linto said tube, anda plurality of spherical valve members of equal size and weight closing said surrounding apertures.

`25. In a carburetor, the combination,with a carbureting chamber, of a plate closing the lower end of said chamber and having a central aperture and a plurality of apertures lof varying sizes surrounding said central aperture, an upright tube secured in Said` lcentral aperture and 'pro]ecting freely upward into said chamber, a nozzle communicating `with a source of fluid fuel supply and opening into said tube, a plurality of spherical valve members of equal size and weight .closing said surrounding apertures, and

means retaining said valve members in alinementV with their apertures.

26. In a carbureter, thecombination, with a carbureting chamber, of a plate closing the lower end olf said chamber and having a central aperture and a plurality of apertures and 'arrangement ofvarying sizes surrounding` said central aperture, an upright tube secured in said central aperture, a nozzle communicating and openi inginto said tube, applurality of spherical valve members of equal size and weight closing Said surrounding apertures, a regulating member above said plate and having a plurality of inclined portions equal in number to said surrounding aper- I tures, and means'for rotating said plate rela? With spherical seats, said tively to. said regulating member whereby the lifting movement of said valve members 4maybe adjustably limited.

27. In a carburetei, the combination, with l a carbureting chamber, of a plate closing the lower end of said chamber and having a central aperture and a plurality of depressions surrounding said central aperture, said depressions having inclined bottoms and the lower ends of said depressions being formed seats being formed withapertures the axes whereof are disposed atdiiferentangles as regards the plane of said plate, and splierica-lvalve members resting in said seats and closing said apertures, whereby said valve members will be unseated successively upon an increase in the diii'crence in pressure within and Without said chamber. ,y

28. ln a carbureter, the combination, with a carbureting chamber, of a platel closing `the lower end et said chamber and having a'central aperture and a plurality of depressions surrounding saidcentral aperture, said y depressions having inclined lower end of said depressions being formed with spherical seats, said seats being formed with' apertures, the axes whereof are/ disposedI at dierent angles as regards the plane .of said plate, sphericalyalve membersrest-l ing in said seats and-closingsaidapertures whereby said valve niernb-ers wiI1'bejun-- an increase in the seated successively upon bottoms and the diderence in pressure within and withoutv Y' portions above said valve members, said plate and regulating members being-"rotatable relatively to each other whereby the opening movementoflsaid valve members is limited.

a carbureting-chamber, of. a plate closing the lower end of said chamber and having a central aperture, a flange-surrounding said aperture, an upright truste-conical tube Vsecured in said aperture, said tube, having circumferential ribs overlying the upper and lower ends of said flange, and a nozzle intersecting they, upper end of said tube and 'communicating with a source of. fluid fuel supply.

carbureting chamber, of a' plate closing Q9. 'in a carbureter, the combination, with los' 30. In a carbureter, the combination, with the lower end of said chamber and having a central aperture, a flange surrounding said `vaperture, an upright frusto-conical tube secured in said aperture, said tube having circumferential ribs overlying the upper and lower ends of said'iasge andan inclined nozzle intersecting the upper end of said tubefand communicating with a source of Huid fuel supply, said tube having a longitudinal slit in its wall extending from end to end thereof in the same vertical plane with said nozzle.-

31. ina carburetor, a carbureting chamber having at its'lower end a circular seat, a portion of the wall of said seat being cut away, plate resting in said seatvand having an arm projecting through said slot, said vplate having a plurality of upwardly opening air admission valves, a plurality'of 'inclined portinns spaced above said valve members,

the combination, with` ofl a circular and means engaging said arm for rotating said plate to bring said valve members under different parts oi? said inclined portion wherebytheir opening movement is adjustably limited.

na carbureter, the combination, with an annular receptacle, of a chimney member secured in theI opening therethrough, said chimney member having a tubular por tion projecting into said opening, a lateral flange-below said`,opening, and a circular seat belowsaid flange, a portion of the wall of said seat being cut away and said flange having a plurality` of spaced inclined portions, of a circular 'plate resting in said seat and having an arm projecting througli said slot, whereby it may be. rotated, said plate being formed with a plurality of air admission apertures similar' in' niunher and arrangement to said inclined portions, and valve members closing said apertures and disposed below said inclined portions, whereby the rotation of said plate will bring seid valve members under ditl'erent parts of said inclined portion to limit their opening movement. i

33. ln a carbureter, the combination, with a carhureting chamber, of a plate. closing the lower end of said chamber and having a plurality of circularlj.' arranged apertures of varying sizes, a plurality of spherical valve members of equal size ni'n'nially closvalve members beinggreater than that of the largest aperture, and a rotatable regu- 'lating member above said plate and having ing saidayaertures, the diameters of saidber above said plate and having a plurality of eircularly arranged bosses whose heights vary directly with the diameters of the apertures to which they correspond so that the lift movement of said valve members may be arrested uniformly.

35. In a carbureter, the.combination, with l a carbureting chamber'and a nozzle com-y municating with the source of fluid fuel supply and opening into said chamber, of a plate traversing said chamber beneath said nozzle and having a plurality of air admission apertures therein, valve members arranged to seat upon the edges of said smaller apertures and close the same, the ratio ,of the effective area of said apertures to the weight of their respective valvey members varying progressively, whereby said valve members will be lifted successively upon an increase in the pressure ldifference without and within-said chamber, and a regulatingl member above said plate and having stop portions arranged to limit the opening movement of said valve members, the distances of all of said valve members from the corresponding portions of said regulating member being always substantially the same. 1

In testimony whereof, I hereunto affix my signature in"thevpresence of two witnesses. FRANK L. KINGSTON.

Witnesses: i

BRENNANB. WEST, J. B.- HULL. 

